Wheeled insect-destroyer



(No Model.)

A. D. TYRREL.

WHEELED INSECT DESTROYER.

No. 444,786. Patented Jan. 13, 1891.

UNITED STATES PATENT OFFicE.

ALVIN D. TYRREL, OF. DAYTON, OHIO, ASSIGNOR OF- ONE-HALF TO STEPHEN J.SIBLEY, OF WEST SPRINGFIELD, MASSACHUSETTS.

WHEELED INSECT-DESTROYER.

SPECIFICATION forming part of Letters Patent No. 444,786, dated January13, 1891.

Application filed October 22, 1890.

To all whom it may concern:

Be it known that I, ALVIN D. TYRREL, a citizen of the United States,residing at Dayton, in the county of Montgomery and State of Ohio, haveinvented new and useful Improvements in Wheeled Insect-Destroyers, ofwhich the following is a specification.

This invention relates to improved wheeled insect-destroyers,particularly designed for being driven into the field among the plantsto be treated and for disseminating the insecticide.

The object of the present invention is the provision of an insectdestroying vehicle which is of unusual efficiency, and one in which, dueto the construction and relative arrangement or disposition of theparts, the apparatus is most compact, simple, cheap, convenient, and aslight as possible consist- 2o ent with utility.

The invention consists in the construction and combination of parts,substantially as hereinafter described, and particularly point ed out inthe claim.

In the drawings, Figure 1 is a rear elevation of the wheeledinsect-destroyer, Fig. 2 being a side elevation of same; and Fig. 3 is avertical sectional view of the air-compressor and the operating-camtherefor, as seen on 0 the line so 00, Fig. 1.

The two wheels a a of the vehicle are pro vided, as usual,for the axleb, which, however, is preferably intermediately depressed, as at c. Therear portion of the thill-frame cl is 5 spring-supported from the axle,and is provided with hangers c, 011 which is supported the receptacle ffor the insecticide liquid or solution, so that the same may have aneasy motion from the supporting-springs g. The

seat is mounted in any desired manner.

h h represent air pumps or compressors, which are supported on thecastings or brackets v 2', the latter in turn being by means of boltsdetachably and rigidly secured to the axle. The piston j for the pump isprovided with a stud and roller k, which takes into a cam-groove Z,formed in a part Z, that is affixed inside of the wheel-hub. The lowerend of said piston is forked and straddles the axle,

Serial No. 368,978. (No model.)

and is thereby constrained to move in the axis 5c of the pump-casing.The cam Z, rotating'with the wheel, has the course of the groove thereinformed so that on each rotation of the wheel the piston of theair-compressor will be reciprocated twice. 5 5

In the particular form of pump shown there is an upper chamber 1 andlower chamber 2, separated by the partition 3, having the conicalvalve-seat opening 4 therein for the conical valve 5, which on itsbottom is provided with the pending projection 6. The pumppiston j playswithin the chamber 2, being provided with the flap-valve 7 for theopening therein, which is closed on the forcing movement. As the pistonis forced inwardly, compressing the air in chamber 2, it-strikes againstthe projection 6 on valve 5, opening same and further compressing theair which is in chamber 1, and which is in the receptacle f above theliquid level therein, which may be perhaps at the height indicated bythe dotted line in Fig. 1. As the piston reverses, the valve 5 closesunder the pressure and air is taken into chamber 2 through. the thenopened flap-valve '7. The hose-pipe form- 7 5 ing air communicationbetween the compressing-pump and receptacle is connected to one or bothof said parts by couplings for ready detachment, as may be desired.

On the top of each pump is a relief-valve, although the same might beplaced on the receptacle f instead, so that as any pressure isestablished in excess of that necessary for sufficiently forcing theliquid through and beyond the pipe and nozzle 02 it may be automaticallyabated. The conduits leading from the compressor-pumps to the receptaclef enter the latter at the bottom thereof, and thereby the agitation ofthe insecticide solution is readily accomplished.

By forming the axle with the intermediate depression and providing thesuspension devices for the receptacle, as shown, the latter is mostcompactly and conveniently disposed, and by making a detachable form ofoonnec- 95 tion between the receptacle and the thillframe the spaceunder the seat may on the removal of the receptacle be utilized forother purposes. For instance, a barrel of flour or bag of meal maybestrapped or suspended'in the place of the tank.

Having fully described my invention, What I claim, and desire to secureby Letters Patent, 1s

In an insect-destroyer, in combinatiom'the carriage having; on theinside of its Wheelhubs grooved cams, the thill-fraine springsupportedby its rear portion from and above the carriage-axle and provided withth e hooked hangers e e, the closed tank having the studs by which it isremovably supported in said hangers and having a discharge-pipe andnozzle, air-pumps removably supported on the axles inside of saidwheel-hubs and having the conduits m 'm, detaehably coupled to andcoinlnunicatingwith the com pressed-aircham bers of said pumps andleading to the bottom of said closed tank, and the pistons of saidairpumps having their piston-rods formed fOIkt d and straddling forengagement the axle and having the studs engaging said wheel-huh cams,and said air-pumps being provided With relief-valves, all substantiallyas described and shown, for the purposes setforth.

ALVIN D. TYRREL.

\Vitnessesr WM. S. BELLOWS, G. M. CHAMBERLAIN.

